Sentient 8-String Passive Guitar Pickup Black Metal Neck. Built exclusively for 7- and 8-string players, the Sentient neck pickup is the perfect neck pickup for natural, complex warmth and tight articulation. With an Alnico 5 magnet and medium strength coils, the blend of vintage PAF and modern tones sounds excellent in both clean and high gain settings. It's ideal for bright to semi-warm woods (from maple to korina) with either maple or rosewood fingerboards and for working in conjunction with a Seymour Duncan bridge pickup.